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Defogger

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  • 1. 2007 Hyundai Santa Fe Limited 2007 ACCESSORIES & BODY, CAB Rear Window Defogger - Santa Fe 2007 ACCESSORIES & BODY, CAB Rear Window Defogger - Santa Fe REAR WINDOW DEFOGGER COMPONENT LOCATION Fig. 1: Identifying Rear Window Defogger Components Location Courtesy of HYUNDAI MOTOR CO. REAR WINDOW DEFOGGER PRINTED HEATER INSPECTION CAUTION: Wrap tin foil around the end of the voltmeter test lead to prevent damaging the heater line. Apply finger pressure on the tin foil, moving the tin foil along the grid line to check for open circuits. Microsoft Saturday, September 26, 2009 1:27:33 PM 1:27:37 Page 1 © 2005 Mitchell Repair Information Company, LLC.
  • 2. 2007 Hyundai Santa Fe Limited 2007 ACCESSORIES & BODY, CAB Rear Window Defogger - Santa Fe Fig. 2: Applying Finger Pressure On Tin Foil Courtesy of HYUNDAI MOTOR CO. 1. Turn on the defogger switch and use a voltmeter to measure the voltage of each heater line at the glass center point. If a voltage of approximately 6V is indicated by the voltmeter, the heater line of the rear window is considered satisfactory. Fig. 3: Measuring Voltage Of Heater Line Courtesy of HYUNDAI MOTOR CO. 2. If a heater line is burned out between the center point and (+) terminal, the voltmeter will indicate 12V. Microsoft Saturday, September 26, 2009 1:27:33 PM Page 2 © 2005 Mitchell Repair Information Company, LLC.
  • 3. 2007 Hyundai Santa Fe Limited 2007 ACCESSORIES & BODY, CAB Rear Window Defogger - Santa Fe Fig. 4: Measuring Voltage Between Burned Out Heater Line And (+) Terminal Courtesy of HYUNDAI MOTOR CO. 3. If a heater line is burned out between the center point and (-) terminal, the voltmeter will indicate 0V. Fig. 5: Measuring Voltage Between Burned Out Heater Line And (-) Terminal Courtesy of HYUNDAI MOTOR CO. 4. To check for open circuits, slowly move the test lead in the direction that the open circuit seems to exist. Try to find a point where a voltage is generated or changes to 0V. The point where the voltage has changed is the open-circuit point. Microsoft Saturday, September 26, 2009 1:27:33 PM Page 3 © 2005 Mitchell Repair Information Company, LLC.
  • 4. 2007 Hyundai Santa Fe Limited 2007 ACCESSORIES & BODY, CAB Rear Window Defogger - Santa Fe Fig. 6: Checking Open Circuits Courtesy of HYUNDAI MOTOR CO. 5. Use an ohmmeter to measure the resistance of each heater line between a terminal and the center of a grid line, and between the same terminal and the center of one adjacent heater line. The section with a broken heater line will have a resistance twice as that in other sections. In the affected section, move the test lead to a position where the resistance sharply changes. Fig. 7: Measuring Resistance Of Heater Line Between Terminal And Center Of Grid Line Courtesy of HYUNDAI MOTOR CO. REPAIR OF BROKEN HEATER LINE Prepare the following items : 1. 2. 3. 4. 5. Conductive paint. Paint thinner. Masking tape. Silicone remover. Using a thin brush : Microsoft Saturday, September 26, 2009 1:27:33 PM Page 4 © 2005 Mitchell Repair Information Company, LLC.
  • 5. 2007 Hyundai Santa Fe Limited 2007 ACCESSORIES & BODY, CAB Rear Window Defogger - Santa Fe Wipe the glass adjacent to the broken heater line, clean with silicone remover and attach the masking tape as shown. Shake the conductive paint container well, and apply three coats with a brush at intervals of about 15 minutes apart. Remove the tape and allow sufficient time for drying before applying power. For a better finish, scrape away excess deposits with a knife after the paint has completely dried. (Allow 24 hours). Fig. 8: Identifying Masking Tape Courtesy of HYUNDAI MOTOR CO. REAR WINDOW DEFOGGER SWITCH INSPECTION 1. Disconnect the negative (-) battery terminal. 2. Remove the crash pad center speaker grill (A). Fig. 9: Identifying Crash Pad Center Speaker Grill Courtesy of HYUNDAI MOTOR CO. 3. Remove the crash pad center speaker (A) after loosening 2 screws. Microsoft Saturday, September 26, 2009 1:27:33 PM Page 5 © 2005 Mitchell Repair Information Company, LLC.
  • 6. 2007 Hyundai Santa Fe Limited 2007 ACCESSORIES & BODY, CAB Rear Window Defogger - Santa Fe Fig. 10: Identifying Crash Pad Center Speaker Courtesy of HYUNDAI MOTOR CO. 4. Remove the center facia panel (A) after loosening 2 screws. Take care not to damage fixing clips. (Refer to the CRASH PAD ) Fig. 11: Identifying Center Facia Panel Screws Courtesy of HYUNDAI MOTOR CO. 5. Disconnect connectors. 6. Using an ohmmeter, inspect the continuity between the terminals after removing controller. Microsoft Saturday, September 26, 2009 1:27:33 PM Page 6 © 2005 Mitchell Repair Information Company, LLC.
  • 7. 2007 Hyundai Santa Fe Limited 2007 ACCESSORIES & BODY, CAB Rear Window Defogger - Santa Fe Fig. 12: Identifying Rear Window Defogger Switch Connector Terminals Courtesy of HYUNDAI MOTOR CO. Fig. 13: Rear Window Defogger Switch Connector Terminals Continuity Reference Chart Courtesy of HYUNDAI MOTOR CO. REAR WINDOW DEFOGGER RELAY INSPECTION Check for continuity between the terminals. 1. There should be continuity between the No.30 and No.87 terminals when power and ground are connected to the No.85 and No.86 terminals. 2. There should be no continuity between the No.30 and No.87 terminals when power is disconnected. Microsoft Saturday, September 26, 2009 1:27:33 PM Page 7 © 2005 Mitchell Repair Information Company, LLC.
  • 8. 2007 Hyundai Santa Fe Limited 2007 ACCESSORIES & BODY, CAB Rear Window Defogger - Santa Fe Fig. 14: Identifying Rear Window Defogger Relay Connector Terminals Courtesy of HYUNDAI MOTOR CO. Fig. 15: Rear Window Defogger Relay Connector Terminals Continuity Reference Chart Courtesy of HYUNDAI MOTOR CO. REAR WINDOW DEFOGGER TIMER INSPECTION 1. If the Defogger SW is ON after the ALT "L" is ON in the state that the IGN1 SW is ON, then the Defogger output shall be ON for 20 minutes. (Operating in the state of the ENGINE RUNNING) 2. If the DEFOGGER SW is ON again while the DEFOGGER output is ON, then the DEFOGGER output shall be OFF. 3. If the ALT "L" is OFF or IGN1 is OFF while the DEFOGGER output is ON, then the DEFOGGER output shall be OFF. 4. If the ALT "L" > 10 volts, then it shall be in the Engine Running State (ALT "L" shall be ON); if the ALT "L" < 5 volts, then it shall be in the Engine Stop State (ALT "L" shall be OFF). Also, if the ALT "L" Microsoft Saturday, September 26, 2009 1:27:33 PM Page 8 © 2005 Mitchell Repair Information Company, LLC.
  • 9. 2007 Hyundai Santa Fe Limited 2007 ACCESSORIES & BODY, CAB Rear Window Defogger - Santa Fe is more than 5 and less than 10 volts, then the former state shall be maintained. 5. If the defogger SW is pressed and the ALT "L" is ON, there shall be no the DEFOGGER relay output. Fig. 16: Identifying Blinking Pattern Of Defogger Switch Courtesy of HYUNDAI MOTOR CO. Microsoft Saturday, September 26, 2009 1:27:33 PM Page 9 © 2005 Mitchell Repair Information Company, LLC.

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